150results about "Thermal non-catalytic cracking" patented technology

A method is provided for manufacturing vinyl chloride monomer (VCM), the method comprises subjecting ethylene dichloride (EDC) to thermal cracking to yield a VCM-containing gaseous product, in which method an amount of thermal energy required to heat a stream of EDC-containing process fluid to temperature(s), at which cracking reactions occur, is produced and transferred to said EDC-containing process fluid using a rotary apparatus (100). A VCM production unit and use of the rotary apparatus in production of vinyl chloride monomer from EDC through therma cracking, are further provided.

A method of producing hydrocarbons from an organic material. The method includes: dissolving a solid including an organic material in a solvent to form a carbon liquid feed; introducing the carbon liquid feed into a liquid inlet of a feed assembly of a reactor system; mixing the carbon liquid feed and an oxidant gas feed in the feed assembly; combusting, in the feed assembly, at least a portion of the carbon liquid feed to produce an at least partially combusted gas mixture and heat; introducing the carbon liquid feed and the at least partially combusted gas mixture to a reactor vessel in fluid connection with the feed assembly; and in the reactor vessel, converting, using the heat, the organic material in the carbon liquid feed into a high value chemical.

Device in the form of a reactor arranged and operative for the recovery of hydrocarbon in gaseous form from a disintegrated solid hydrocarbon-based material, which reactor comprises a rotor driven in rotation inside a circular rotor housing shell comprising a set of rotor discs each of which has a number of rotor arms extending in radial directions from a rotor hub, wherein the radial distance between the rotor hub and the rotor housing shell is increasing in the direction towards an outlet for the recovered process gas from the reactor housing.

The invention relates to a method for treating a feedstock comprising a plastics-derived and / or tyre-derived and / or solid-recovered-fuel-derived pyrolysis oil, which method comprises: b) hydrogenation of the feedstock and a portion of the liquid effluent resulting from the separation step e1) to obtain a hydrogenated effluent; c) hydrotreatment of the hydrogenated effluent to obtain a hydrotreated effluent; d) hydrocracking of the hydrotreated effluent to obtain a hydrocracked effluent; e1) separation of the hydrocracked effluent at high temperature and high pressure to obtain a gaseous effluent and a liquid effluent, a portion of which is recycled upstream of step b); e2) a separation / washing step carried out at low temperature and high pressure, fed with the gaseous effluent and optionally the other portion of the liquid effluent resulting from step e1) and an aqueous solution, to obtain a hydrocarbon effluent freed of its impurities.

Provided are (1) a method for converting ethanol, comprising contacting a raw material mixture containing ethylene and ethanol with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms, (2) a method for converting ethanol, comprising contacting a raw material mixture containing methanol and ethanol with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms, and (3) a method for converting ethanol, comprising: contacting a raw material mixture containing ethanol and ethylene with a catalyst in an adiabatic reactor to obtain a reaction gas containing an olefin having 3 or more carbon atoms; separating the reaction gas into fraction A mainly containing a hydrocarbon having 2 to 3 carbon atoms and fraction B mainly containing a hydrocarbon having 4 to 6 carbon atoms by a first distillation column; and recycling at least a portion of the fraction A as a portion of the raw material mixture to the reaction step.

Methods and systems for upgrading hydrocarbons. In some embodiments, the method can include feeding molecular hydrogen, utility fluid, and a hydrocarbon feed including a Group I lube oil extract to a first hydroprocessing stage. The method can also include hydroprocessing in the first hydroprocessing stage to produce a first hydroprocessing effluent. The method can also include separating a middle distillate product and a bottoms product from the first hydroprocessing effluent. The method can also include feeding molecular hydrogen and at least a portion of the bottoms product to a second hydroprocessing stage. The method can also include hydroprocessing in the second hydroprocessing stage to produce a second hydroprocessing effluent. The method can also include recycling at least a portion of the middle distillate product as at least a portion of the utility fluid to the first hydroprocessing stage.

The application discloses a heating furnace control method, device, equipment and storage medium for delayed coking, and the method comprises the following steps: generating a three-dimensional thermodynamic model of the heating furnace and performing gridding according to heating furnace modeling; obtaining simulation results of the three-dimensional thermodynamic model according to preset input parameters; judging whether the outlet cross-section position of the heating furnace includes a grid exceeding a preset target temperature range, if yes, updating the heat source power and returning to the simulation result calculation step; if no and the current judgment is the first judgment, updating the feeding rate and returning to the simulation result calculation step; if no and the current judgment is not the first judgment, going to the next step; judging whether the heating furnace includes a grid exceeding the preset upper limit of free state coke content, if yes, updating the heat source power and the feeding rate and returning to the simulation result calculation step; if no, generating a control instruction according to the current heat source power and the feeding rate. The application can fully exert the production efficiency of the heating furnace.

The invention includes systems and methods for chemical production that utilize an electric furnace and a molten salt loop to extract thermal energy from effluent exiting the furnace to preheat feedstock entering the furnace. Some such systems and methods utilize a feed preheat (FPH) heat exchanger through which the feedstock passes before entering the furnace, and an effluent heat exchanger through which the effluent passes after exiting the furnace, such that molten salt can be circulated (1) through the effluent heat exchanger to extract thermal energy from the effluent and (2) through the FPH heat exchanger to transfer the extracted thermal energy to the feedstock.

The present disclosure concerns a rotary apparatus (100) configured for inputting thermal energy (heat) into fluids by having fluidic stream repeatedly propagated through rotating and stationary components arranged inside said rotary apparatus in accordance with essentially helical trajectory. The rotary apparatus (100) comprises two or more rotor blade cascades (R1, R2) coaxially arranged on one or more rotor shaft(s), and at least two stationary vane cascades arranged upstream of a first rotor blade cascade (R1) and downstream of a rearmost rotor blade cascade (R2), respectively. In operation, fluid, such as gas, is heated inside the rotary apparatus while repeatedly passing through cascades S1-R1-R2-S2 in accordance with essentially helical trajectory. The rotor blade cascades can be configured to rotate in co- and counter directions and / or with the same or different speed. In some configurations the apparatus further comprises a flow turn cascade (FTC) configured as a stationary vane cascade arranged between successive coaxial rotor blade cascades (R1, R2). Related method for thermally treating fluids is further provided.

Processes and systems for producing olefins from a crude oil include a steam cracking furnace having a radiant heating section and a convective heating section. One or more heating coils are disposed in the convective heating section for heating a heat transfer fluid. A first heat exchanger heats the crude oil with the heated heat transfer fluid, and the heated crude oil is desalted to form a desalted crude. A second heat exchanger heats the desalted crude with the heated heat transfer fluid to form a preheated desalted crude, which is separated in a first separator to recover a hydrocarbon vapor fraction and a hydrocarbon liquid fraction. A heating coil in the convective section superheats the hydrocarbon vapor fraction and a radiant heating coil in the radiant heating section thermally cracks the superheated vapor fraction to recover a first cracked effluent comprising olefins.

The present invention relates to a process for pyrolyzing a polyolefin recovered from a solid material M containing said polyolefin, a production unit for carrying out said process, a pyrolysis oil obtainable or obtained by said process and a use of said pyrolysis oil.

Provided is a continuous process for converting waste plastics into polyethylene for recycling. In one embodiment, the process includes selecting waste plastics containing polyethylene and / or polypropylene and passing the waste plastic through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent. The pyrolyzed effluent is separated into off-gas, a naphtha / diesel fraction, a heavy fraction, and char. The naphtha / diesel fraction is passed to a refinery crude unit distillation column, from which a straight-run naphtha (C5-C8) fraction or a propane / butane (C3-C4) fraction is recovered. The straight-run naphtha fraction (C5-C8) or a propane / butane (C3-C4) fraction is passed to a steam cracker for ethylene production. The heavy fraction from the pyrolysis unit can also be passed to an isomerization dewaxing unit to produce base oil.

This invention provides an intelligent monitoring and automatic control system for coke level in a saturated steam environment, relating to the petrochemical field. It includes a dehydration chamber, a data acquisition module that interfaces with the data transmission module, and a laser radar level gauge and infrared thermal imaging monitoring system. The laser radar level gauge is fixedly connected to the top surface inside the dehydration chamber. The infrared thermal imaging monitoring system is located on the opposite side of the feed inlet. An equipment execution module interfaces with the data transmission module and includes an intelligent grab mechanism located at the top inside the dehydration chamber. An electric slider is slidably connected to an electric slide rail, enabling comprehensive monitoring of coke level, water level, flow state, and coke morphology. This overcomes the limitations of traditional single-parameter monitoring, providing comprehensive and reliable data support for subsequent control decisions. It solves the problem that due to the pervasive steam inside the dehydration chamber, operators have difficulty observing the material discharge from the bottom chute of the coke tower, making timely adjustments to the coking operation impossible.

The invention relates to a facility and method for steam cracking using at least one reactor heat exchanger. The heat required for the steam cracking reaction is provided by a working fluid circulating in at least one closed-loop circuit (130), connected to an inlet of the reactor heat exchanger (112) and to the corresponding outlet, and comprising: at least one heating device (131, 132) upstream of the reactor heat exchanger (112) with respect to the circulation of the working fluid, at least one thermal storage system (170) mounted in parallel with or downstream of the at least one heating device, and upstream of the reactor heat exchanger, at least one heat exchanger (134, 135) located downstream of the reactor heat exchanger (112), and upstream of the at least one heating device (131, 132), at least one circulating device (138).

Processes herein may be used to thermally crack various hydrocarbon feeds, and may eliminate the refinery altogether while making the crude to chemicals process very flexible in terms of crude. In embodiments herein, crude is progressively separated into at least light and heavy fractions. Depending on the quality of the light and heavy fractions, these are routed to one of three upgrading operations, including a fixed bed hydroconversion unit, a fluidized catalytic conversion unit, or a residue hydrocracking unit that may utilize an ebullated bed reactor. Products from the upgrading operations may be used as feed to a steam cracker.

The present invention relates to a jet fuel composition comprising, relative to the total volume of the composition: a. from 9% to 60% by volume of a jet fuel in accordance with standard ASTM d1655-21-c; b. from 30% to 90% by volume of a renewable synthetic kerosene base, the kerosene base being derived from the hydroprocessing of esters and fatty acids, a Fischer-Tropsch process, or a process for producing jet fuel from alcohols; and c. from 1% to 15% by volume of an aromatic base comprising at least 70% by weight, preferably 80% by weight, C8-C12 aromatic compounds, relative to the total weight of the aromatic base.

A system for refining crude oil to minimize emissions of toxic compounds in the atmosphere during refining. The crude oil is treated with viscosity-reductant additives, reducing viscosity by up to 50% and increasing API gravity by more than 2 points. The method of spray-cracking and vacuum-flashing of crude oil, the system separates light and heavy end chains within the reactor. The vapor is condensed into designer fuels using a multi-stage horizontal reverse condensate-condenser or closed-loop distillation tower. Process heater directs flue gases through high-salinity fluids, such as a brine-processing device to capture, sequester, or mineralize the CO2, CO, NOx, and other contaminants from the flue gases. This results in a significant reduction in emissions, a further reduction to near-zero emissions (>95-98%) is achieved by the combination of (1) the closed loop processes, tank blanketing and capturing, sequestering and mineralizing emitted flue gases from the heater combustion-exhaust.

A process for converting whole crudes and other heavy hydrocarbon streams to produce ethylene. The process includes feeding a hydroprocessed medium boiling fraction, a hydroprocessed residue fraction, or both, and a light boiling fraction to a steam cracker and recovering a light fraction. The light fraction is fed to a first separator and recovering a C1-C3 stream and a mixed C4 and C4+ stream, comprising isoolefins, olefins, and dienes and feeding the mixed C4 and C4+ stream to a second separator and recovering a mixed C4 stream comprising isoolefins, olefins, and a C4+ stream. A portion of the mixed C4 stream is dimerized in a dimerization unit to produce a dimerized product stream, hydrogenated in a total hydrogenation system, producing a hydrogenated dimer product stream, and cracking the hydrogenated dimer product stream in a thermal cracking reactor system, producing one or more of hydrogen, methane, ethylene, propylene, n-butenes, and isobutene.

The present application relates to the field of low carbon olefin preparation, and discloses a method and a production system for preparing low carbon olefin from waste materials, the method comprising the following steps: (1) subjecting the waste materials to thermal cracking or catalytic cracking to obtain degradation oil; (2) subjecting the degradation oil to steam cracking reaction in a steam cracking furnace to obtain low carbon olefin; wherein the steam cracking furnace comprises a convection section and a radiation section, and the degradation oil is mixed with water vapor and heated to a transverse temperature in the convection section under reduced pressure, and then enters the radiation section to perform steam cracking reaction; the transverse temperature is 350-600 DEG C; wherein the waste materials are waste plastics and / or waste rubber. The degradation oil is obtained by degrading waste plastics or waste rubber through a chemical recycling method, and the obtained degradation oil is vaporized and subjected to steam cracking under reduced pressure, which can reduce coking phenomenon, prolong the coking period of the radiation section, and improve the online rate of the device.

A pyrolysis method and system are provided that may utilize a recycled plastic feedstock that comprises various types of waste plastics or a feedstock that comprises various types of waste plastics and at least one crude post-industrial liquid waste. The disclosed pyrolysis method and system may be configured to convert various types of waste plastics, including post-customer and post-industrial wastes, and / or crude post-industrial liquid wastes into useful pyrolysis oils.

Processes integrating product streams from Fischer-Tropsch processes with other hydrocarbon processes, including, hydroprocessing, and naphtha to ethane and propane to ethylene and propylene, are described. In some cases, the Fischer-Tropsch product stream is separated into two or more streams before being sent to the later process, while in other cases the entire Fischer-Tropsch product stream is sent to the subsequent process.

A method and a process arrangement for producing hydrocarbons from plastic-based raw material by a gasification in an integrated process The integrated process includes a gasification unit for forming a gasification product, a steam cracking unit for forming a cracking product and a recovery unit for recovering hydrocarbons. The plastic-based raw material is gasified with steam in the gasification unit having at least one fluidized bed gasifier and the gasification product is formed, the gasification product is cooled at least partly for slowing and / or stopping the chemical reactions after the gasification, The gasification product is supplied to a quench tower of the gasification unit in which the gasification product is treated and condensable components are removed from the gasification product forming a treated gasification product, and the treated gasification product and the cracking product of the steam cracking unit are supplied to the recovery unit for separating and recovering hydrocarbons.

This disclosure relates to methods, apparatus, and systems for removing sulfur compounds from heavy hydrocarbon feedstocks as part of a steam cracking process for producing light olefins. In at least one embodiment, the method includes introducing a hydrocarbon feedstock having a first sulfur content into a steam cracker to produce a steam cracker effluent having a second sulfur content less than the first sulfur content. The method further includes introducing the steam cracker effluent into a fractionation system to produce a light hydrocarbon product stream having a third sulfur content less than the second sulfur content.

A process for producing light olefins from a hydrocarbon feed comprising arsenic at an initial quantity. The process can comprise one of more of: introducing the hydrocarbon feed to a desalter to produce a desalted hydrocarbon feed having a reduced quantity of arsenic: preheating the desalted hydrocarbon feed; introducing the preheated hydrocarbon feed to a flash separation vessel to produce an overhead fraction and a bottoms fraction; introducing the overhead fraction and steam to a radiant section of the steam cracker operated under steam cracking conditions to produce a. steam cracked effluent; and separating the steam cracked effluent to obtain a steam cracker tar, a steam cracker gas oil, a naphtha, cut, and a process gas stream; and recovering an olefin product stream from the process gas stream. Arsenic quantities in various streams in the process can be calculated and controlled.